Salt us a good way to preserve meat, though that method of preservation was used many decades and centuries ago.
Today we use other methods.
you could dry it out if it was meat or salt it also keep it refrigerated or freeze it
Both sugar and salt can preserve equally well and have been used as preservatives since bygone days. Salt is better used to preserve meat while sugar would do well as a preservative for fruits.
Francis Bacon died from the pneumonia he acquired while performing an experiment with a chicken and ice. He was attempting to see if snow would preserve meat in the same way that salt does.
People in deserts had no way to preserve their food as there was no electricity for freezers or refrigerators to work and no ice available. They preserved much of their meat by drying it after salting it down well. This prevented it from spoiling or becoming infested with maggots.
Refrigeration had not yet been invented, so the only way to preserve meat was to salt it. Adding spices helped to hide the salty taste. The spices also concealed the taste of meat that had gone bad.
It is a way to preserve a food that tastes good.
I dont know what "preserve" means, but the answer i would give that queston would be : EAT IT :D
By drying or salting it.
it was used to preserve food and replenish the salt in your sweat also they used it for trading
Keep it under cover from the sun.
Because, salt was needed to flavor food, preserve meat, used for medical purposes, and to keep the body healthy. But in West Africa, salt was a rare. So, West Africans traded their gold for salt. (Salt was so valuable, it was worth its weight in gold. 1 pound of salt = 1 pound of gold.)
Clockwise for good luck.